A ceramic injection-moulding technique has been used for the preparation of bars and toroids of Mn-Zn ferrite. The binders were based on a combination of polypropylene, microcrystalline wax and stearic acid. Components up to 4 mm thick were fabricated, extended binder burnout schedules, up to 8.5 days in duration, in a nitrogen atmosphere were required for the thicker parts. Sintered densities were typically 90% of the theoretical value. Initial permeabilities of the toroids were lower than expected (700-1600 rather than 4000) due to the smaller grain size (4-6 mum) of the fired products. Optimization of the sintering schedule should enable the microstructure and magnetic properties to be improved.